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@uitrit gisten stwt, @time JOHN W. BOYNTON, OF EAST' HARTFORD, CONNECTICUT, -AND JOHN A. McGAW, OF NEWARK, NEW JERSEY.

Letters Patent No. 72,966, datcdeJamtarg/ 7,1868.

IMPROVED MODE OP REMOVING BUBRSAND OTHER VEGETABLE MATTERS FROM WOOL.

dige tlgehule referat tu tu tigen tetten ,tutti :mt nalatig init nt its une.

TO ALL WHOM 1T MAY CONCERN: y

e it known that we, JOHN W. BOYNTQN', of East Hartford, county of Hartford, and'State of Connecticut, and JOHN A. McGAW, of Newark, county of Essex, and State of New Jersey, have invented certain new and useful Improvements in the Mode or Process for Destroying Burrs or other Vegetable Substances from Wool; and to enable others skilled inthe art to make, use, or practise the same, we will proceed to describe.

The nature of this invention consists iu the employment of chemical preparations diused among the mass or fibres of the wool in such a manner as to completely destroy burrs or other vegetable substances therefrom, without destroying or injuring the wool itself.l It further consists in the use or employment of steam, with proper chemical preparations for the purpose of diiiusing and producing heat and moisture through wool, to destroy burrs and other vegetable substances therefrom. d

The destruction and removal of burrs and other vegetable substances from wool, in preparing it for manufacturing purposes, has become a great desideratum. Eiforts have been made to accomplish the object of removing burrs and other vegetable substances in wool, to prepare it for carding, without destroying or injuring the staple of the wool, which heretofore have been attended with little or but partial success. There are, no doubt, several preparations which may partially or quite ed'ect the object stated above. Among them, webelieve the following to be well adapted to secure the object Y The wool is first scoured or cleansed, and from the hydro-extracter`is placed in a room, or tight apartment,

while yet in a wet state. This apartment is (or not, as desirable,) provided with grating, racks, shelves, dsc., upon-which it may be desirable sometimes to place the wool. Into this room or apartmentwe introduce vapors (as nitrous vapors) with a jet of steam suicient to vmaintainla tenjiperatureA of heat equal to 150? Fahrenheit for about five hours, (but it is believed that the duration of heat by steam may be greatly varied,) after which the wool should be removed from said apartment and dried perfectly dry. The drugs employed or made use of for generating vapors, are sulphur. and nitrate-of soda, with sulphuric acid enough to decompose, dissolve, or meisten the nitre, which are to be burned together, as described, in the proportion of twelve pounds or parts of sulphur or brim'stone (commercial) to one part each 4of nitre and ysulphuric acid for five hundred pounds of wool. These vapors can be generated in a great variety of ways, and by the use of several drugs besides those enumerated above, and for this reason we do not wish to be confined to the particular way or particular drugs in producing the vapor to be diffused intothe/wool.

In the accompanying drawings is shown a plan elevation of a room in which the wool is placed for removing burrs and other vegetable substances, with a furnace attached for `preparingr destructive or chemical vapor, and a pipe for the introduction of steam, for the double purpose of heating the room and as a joint agent in di'using the vapor in the wool.

a is the room or apartment; al is the interior lining of theapartment, made of any suitable material, as sheet lead, Snc.; a2 is a shelf, rack, or grating, upon which the wool is placed; a3 is a cock for drawing oif the vinegar or condensation of the vapor or acid. (This acid, after having been used as above described, is worth for other purposes nearly or quite the original cost of drugs used.) a is a furnace a5 is a receptacle-in which the brimi stone is placed; a is a receptacle placed directly over the former, in which the chcmica-lsor acids are placed for evaporizing by the heat` from beneath the burning brimstone; a7 is an aperture through which the. vapor 'passes into the room and mingles with, and is diiused by, the joint action ofthe steam which enters the room through the pipe a8 into the wool.

VWe believe we have thus described the nature and process by which we are enabled to effect the destruction of burrs and other vegetable matter in wool without injury to its staple, and so as to enable others skilled in the art to practise the same therefrom. A

What we claim, therefore, and desire to secure by Letters Patent, is

1. The employment of chemical vapors in the process of dcstroyingburrs and other foreign vegetable sub= stances in wool, substantially us described.

'2. We claim the employment of steam as a joint agent in diusng the vapor and heating the apartment to produce the result described. f

3. We claim the process of destroying burrs or other foreign vegetable substances in wool, substantially as set forth. y

JOHN W. BOYNTON. [L 5.] JOHN A. McGAW.` [1.. s.] Witnesses:

E. N. MILLER,

FRED. U. PATRICK', as to MCGAW' JEREMY W. BLISS,

as to LBOYNTON4 FRED. M. PATRICK, 

